Grating



March 16 1926. 1,577,267

J. D. SPAULDING ET AL GRATING Filed Jan. 30 1925 'ings or s elves to form the cross rods of a Patented Mar. 16,1926. i

UNITED STATES 1,577,267 iPAT-ENT OFFICE.

JOHN D. SPAULDING AND OLIVER D. COLLIS, OF CLINTON, IOWAQASSIGNORS TO THE COLLIS COMPANY, OECLIN'I'ON,

IOWA, CORPORATION OF IOWA.

V GRATING.

Application filed January To all whom it may concern Be it known that we, JOHN D. SIAULDING and OLIVER D. CoLLIs, both citizens of the United States, and residing at Clinton, county of Clinton, and State of Iowa, have invented certain new and useful Improvements in Gratings, of which the following is a specification.

This invention is intended primarily as a grating or shelf for use in connection with bread racks or like structures in which an openwork shelving is desirable, and the object of the present invention is to simplify the construction and cost of manufacture without sacrificing the elements of strength, rigidity, and durability. The grating or shelf consists essentially of a series of cross rails or bars with wire rods running at right angles thereto. In the past it has been customar in the manufacture of such gratcontinuous length of wire bent back and forth upon itself, which method of manufacture has involved difliculties and complications in the handling of such a continuous length of Wire, which difficulties are avoided in the case of the present invention.

The employment of a continuous length of wire renders it diflicult to repair or renew any of the rod sections in case the same becomes broken. The present invention also obviates this difficulty by arranging the sections in units which, in case of breakage, may be renewed individually without difficulty.

Further objects and details of the invention will appear from the specification wherein- Figure 1 is a perspective view of a section of the present grating or shelf prior to galvanizing;

Fig. 2 is a detail partly in section showing the method of overlapping the ends of the wire rod after the same has been com pleted by a galvanizing process;

Fig. 3 is a perspective showing the method of clamping .an intermediate section of the wire rod to the rail before galvanizing; and

Figs. 4 and 5 are details partly in section showing modified methods of forming and overlapping the ends of the Wire rods, completed -by galvanizing.

The grating as a whole comprlses a plurality of spaced parallel side rails 10 each so, 1925. Serial in). 5,700.

relation, which side rails are connected by means of a plurality of parallel cross rails 11 eachterminatin in a dowel 12 of re duced dimension w ich isentered through the side rails and upset to rivet the parts together. The structure comprises a frame for the support of a plurality of cross rods 13 which are arranged in pairs forming closed units of elongated rectangular formation being connected by end sections 1 1-14 which have turns lying outside of the margmal cross rails 11. It will be understood that the number of cross rails may be multiplied indefinitely, and in the present instance three only of said cross rails are shown simply byway of illustration.

At the pointswhere the rods 13 intersect the cross rails, the latter are provided with recesses 15 into which the rods are laid after .which the edges of said recesses are struck or swedged down to form overlapping lips 16 which serve to tightly embrace and hold the rods in place. The arrangement is one which brings the ends of the cross rods into overlapping relation with respect to one of the cross bars which, in the present instance, is shown to be the intermediate cross bar. In Figs. land 2, the recesses 17 which receive the overlapped ends of the rods are of double depth, but are otherwise similar in formation to the recesses 15 already described.

In providing the overlap for the ends of the wlre rods, the preferred method is that shown in Fig. 2, in which one of the ends 18 is given an abrupt offset to bring it underneath the end of the companion rod, which arrangement limits the bent or offset to a point closely adjacent the cross bar, so thatafter the entire grating hasbeen dipped into a galvanizing bath, a deposit 19 of zinc or like galvanizing metal will fill into the interstices and corners adjacent to the overlapped ends of the rods, so that the joint at this point will be practically sealed and diflicult of detection and the entire grating or shelf will be protected by the galvanizing coat.

In Fig. 4 the ends 2020 of the rods are half out in each instance, so that a similar result is attained, while in Fig. 5 the ends 2l--21 are each beveledto provide for an overlap, although the construction of Fig. 2 is preferred, since it does not weaken the formed from a bar of metal set in edgewise structure by cutting. away the stock. Of

course, in the case of Figs. 4 and 5, it is unnecessary to provide a recess of double depth to receive the overlapped ends of the wire.

The arrangement is one which permits the cross rods to be made in units and inserted into place by easy manipulation, or by mechanlcal means, and avolds the diiiiculty attendant the employment of a continuous length of wire running back and forth throughout the entire series of rods. at the same time the arrangement is one which is to all intents and purposes as strong and rigid as though a continuous wire were emplo ed.

e claim:

1. In a grating; the combination o:E a plurality of cross ars, each provided in 1ts supporting edge with a plurality of recesses, and a plurality of cross rods ridgmg the space between the bars, said cross rods being arranged in units of two rods bent to closed formation and having their ends overlapped within one of the recesses, substantially as described.

2. In a grating, the combination ot a plurality of cross bars, each provided in its supporting edge with a plurality of recesses, and a plurality of cross rods bridging the space between the bars, said cross rods being arranged in units of two rods bent to closed rectangular formation and having their ends overlapped within one of the re cesses, the margins of all of the recesses being swedged down to embrace the adjacent cross rod, substantially as described.

3. In a grating, the combination of a plurality of cross bars, each provided in its supportingedge with a plurality of recesses, a plurality of cross rods bridging the space between the bars, said cross rods being arranged in units of two rods bent to closed rectangular formation and havmg thelr ends overlapped within one of the recesses, and a galvanizing coating serving to fill in the spaces adjacent the overlapped ends of the rod sections, substantially as described.

a. In a gratin the combination of a plurality of cross bars, each provided in its sup orting edge with a plurality of recesses, a p urality of cross rods bridging the space between the bars, said cross rods bein arranged in units of two rods bent to closed rectangular formation and having their ends overlapped within one of the recesses, the margins of all of the recesses being swedged down to embrace the adjacent cross rods, and a galvanizing coating serving to fill in the spaces adjacent the overlapped ends of the rod sections, substantially as described.

5. In a grating, the combination of a plurality of spaced side bars, a plurality of spaced cross bars having their ends secured to the side bars, and each having in its supporting edge a plurality of recesses, certain of the recesses being of double depth, a plurality of parallel cross rods bridgin the space between the cross bars, said rods in arranged in units and having the ends 0 the cross rods overlapped within the recesses of double depth, all of the recesses having their margins swedged down to embrace a portion of the adjacent rod, substantially as described.

6. In a grating, the combination of a plurality of cross bars provided in their supporting edges with a lurality'of recesses, a pluralit of cross rod; bridging the space betweentie cross bars and laid within said recesses, said bars being arranged in units and the free ends of certain of said bars being overlapped within the proximate recess, the margins of all of the recesses being swedged down to embrace the portions of the adjacent bars, substantially as described.

7. In a grating, the combination of a plurality of cross bars each provided in its supporting edge with a plurality of recesses certain of the recesses being of increase depth and all of the sup orting edges lyin in the same plane, a p urality of paralleI cross rods bridgin bars, said cross ro s being arranged in units of two rods bent to closed substantially rectangular formation and having their ends overlapped within one of the deeper recesses, one of the said overlapping ends being sharply offset to afford the lap and maintain the supporting surfaces of the rods within a uniform lane, and the margins of all the recesses being swedged down to embrace the adjacent portions of the cross rods, substantially as described.

8. In a grating, the combination of a plurality of cross bars each provided in its supporting edge with a plurality of recesses certain of the recesses being of increase depth and all of the supporting edges lying in the same plane, a plurality of parallel cross rods bridging the space between the bars, said cross rods being arranged in units of two rods .bent to closed substantially rec tangular formation and having their ends overlapped within one of the deeper recesses, one of the said overlap ing ends being sharply offset to aiford the a and maintain the supporting surfaces of t e rods within a uniform plane, the margins of all the recesses being swedged down to embrace the adjacent portions of the cross rods, and a galvanizing coating serving to fill in the spaces adjacent the overlapped ends of the rod sections, substantially as described. OLIVER D. COLLIS. JOHN D. SPAULDING.

190 the space between the 

